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  3. FMeshSurfacePath

FMeshSurfacePath

Walk the surface of an FDynamicMesh to try find a planar path connecting two points.

API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/Operations

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/Operations/EmbedSurfacePath.h
Include #include "Operations/EmbedSurfacePath.h"

Syntax

class FMeshSurfacePath

Remarks

Walk the surface of an FDynamicMesh to try find a planar path connecting two points. Paths include every vertex and edge they need to cross. Greedy algorithm will only return one path if there are multiple. bool WalkMeshPlanar( const FDynamicMesh3* Mesh, int StartTri, int EndVertID, FVector3d StartPt, int EndTri, FVector3d EndPt, FVector3d WalkPlaneNormal, TFunction VertexToPosnFn, bool bAllowBackwardsSearch, double AcceptEndPtOutsideDist, double PtOnPlaneThreshold, TArray>& WalkedPath, double BackwardsTolerance = FMathd::ZeroTolerance * 10); Represent a path on the surface of a mesh via barycentric coordinates and triangle references

Variables

  Type Name Description
Public variable bool bIsClosed  
Public variable FDynamicMesh3 * Mesh  
Public variable TArray< TPair< FMeshSurfacePoint, int > > Path  

Constructors

  Type Name Description
Public function   Cut mesh with plane. Assumption is that plane normal is Z value.

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function bool

AddViaPlanarWalk ( int StartTri,
int StartVID,
FVector3d StartPt,
int EndTri,
int EndVertID,
FVector3d EndPt,
FVector3d WalkPlaneNormal,
TFunction< FVector3d(const FDynamicMesh3*, int)> VertexToPosnFn,
bool bAllowBackwardsSearch,
double AcceptEndPtOutsideDist,
double PtOnPlaneThresholdSq,
double BackwardsTolerance
)

  
Public function bool Make the embedded path into a closed loop.
Public function bool

EmbedSimplePath ( bool bUpdatePath,
TArray< int >& PathVertices,
bool bDoNotDuplicateFirstVertexID,
double SnapElementThresholdSq
)

 TODO: support for embedding arbitrary paths in mesh using a graph remesher **
Public function Const bool  
Public function Const bool TODO: not clear if we need this helper to find the shared triangle (if it exists) that we could traverse to connect two surface points.
Public function void

Reset ()

  
Public function Virtual EOperationValidationResult  

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